ISL9444EVAL1Z Intersil, ISL9444EVAL1Z Datasheet

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ISL9444EVAL1Z

Manufacturer Part Number
ISL9444EVAL1Z
Description
Power Management IC Development Tools ISL9444 EVALUATION BOARD 1 - 40 Ld QFN - RoHS COMPLIANT
Manufacturer
Intersil
Type
PWM Controllersr
Datasheet

Specifications of ISL9444EVAL1Z

Rohs
yes
Product
Evaluation Boards
Tool Is For Evaluation Of
ISL9444
Input Voltage
6 V to 20 V
Output Current
25 A
For Use With
ISL9444
ISL9444EVAL1Z: Triple PWM Step-Down Synchronous
Buck Controller
ISL9444EVAL1Z Evaluation
Board
The ISL9444EVAL1Z evaluation board (shown in Figure 1)
features the ISL9444. The ISL9444 is a triple-output
synchronous buck controller that integrates three PWM
controllers. The ISL9444 offers external soft-start,
independent enable functions and integrates UV/OV/OC/OT
protection. Its current mode control architecture and internal
compensation network keep peripheral component count
minimal. Programmable switching frequency ranging from
200kHz to 1200kHz helps to optimize inductor size while the
strong gate drivers deliver up to 25A for each PWM channel.
December 22, 2011
AN1712.0
1
1-888-INTERSIL or 1-888-468-3774
FIGURE 1. ISL9444EVAL1Z EVALUATION BOARD
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Electrical Rating
The ISL9444EVAL1Z evaluation board is designed for low
current application. The current rating of the ISL9444EVAL1Z
is limited by the FETs and inductors selected. The ISL9444
gate drivers are capable of delivering up to 25A for each PWM
channel as long as the proper FETs and inductors are provided.
The electrical ratings of ISL9444EVAL1Z are shown in Table 1.
Input Voltage
Switching Frequency
PWM1 Output
PWM2 Output
PWM3 Output
All other trademarks mentioned are the property of their respective owners.
PARAMETER
TABLE 1. ELECTRICAL RATING
Copyright Intersil Americas Inc. 2011. All Rights Reserved.
Application Note 1712
6V-20V
600kHz
1.05V @ max 6A
3.3V @ max 6A
1.8V @ max 6A
RATING

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ISL9444EVAL1Z Summary of contents

Page 1

... The current rating of the ISL9444EVAL1Z is limited by the FETs and inductors selected. The ISL9444 gate drivers are capable of delivering up to 25A for each PWM channel as long as the proper FETs and inductors are provided. The electrical ratings of ISL9444EVAL1Z are shown in Table 1. PARAMETER Input Voltage Switching Frequency ...

Page 2

... PWM2 will be enabled after PWM1 finishes start-up. Disable PWM2 Enable PWM2 when PFI is high. In the ISL9444EVAL1Z, PFI is connected to the input voltage through a resistor divider. If this option is chosen, PWM2 will be enabled when the input voltage is around 6.4V Enable PWM3 when EN2 is high. In this option, PWM3 is tracking with PWM2 ...

Page 3

Application Note 1712 FIGURE 3. PROPER PROBE SET-UP TO MEASURE OUTPUT RIPPLE AND PHASE NODE RINGING . 3 FIGURE 2. PROPER TEST SET-UP OUTPUT CAP OUTPUT CAP OUTPUT CAP OR MOSFET OR MOSFET OR MOSFET AN1712.0 December 22, 2011 ...

Page 4

Typical Evaluation Board Performance Curves 100 8V-1.05V 90 80 18V-1.05V 0.0 1.0 2.0 3.0 OUTPUT CURRENT (A) FIGURE 4. PWM1 EFFICIENCY vs LOAD (V 100 8V-1. 18V-1. 0.0 1.0 2.0 3.0 OUTPUT ...

Page 5

Typical Evaluation Board Performance Curves 1.0 0.8 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1 OUTPUT CURRENT (A) FIGURE 10. PWM1 LINE REGULATION CURVE (V = 12V ...

Page 6

Typical Evaluation Board Performance Curves FIGURE 16. PWM3 OUTPUT RIPPLE UNDER MAX LOAD (V 6 Application Note 1712 V (AC), 20mV/DIV OUT3 1µs/DIV = 12V 12V, unless otherwise noted. (Continued ...

Page 7

... EN2 DNP 5 6 VCC5V EN3 EN2 1 2 EN3 PWM3 is configured to track the VO2 by default. Title ISL9444EVAL1Z EVALUATION BOARD (40 PIN) Size Document Number <Doc> VO2 TP7 TP8 1 GND TP19 1 GND TP13 1 CLKOUT TP9 1 VO3 ...

Page 8

... RL1, RL2, RL3 RES, SMD, 0603, 1.2Ω, 1/10W, 1%, TF, ROHS 8 Application Note 1712 DESCRIPTION PWB-PCB, ISL9444EVAL1Z, REVA, ROHS CAP, SMD, 0603, 100pF, 50V, 5%, C0G, ROHS CAP, SMD, 0603, 1µF, 50V, 10%, X5R, ROHS CAP, SMD, 0603, 47pF, 50V, 5%, C0G, NP0, ROHS CAP, SMD, 0603, 470pF, 50V, 10%, X7R, ROHS VENKEL CAP, SMD, 0603, 0.47µ ...

Page 9

... ISL9444EVAL1Z BOM REFERENCE PART NUMBER QTY UNITS DESIGNATOR H2511-002R2-1/10W1 R13, R14, R17 RES, SMD, 0603, 2.2Ω, 1/10W, 1%, TF, ROHS H2511-00R00-1/10W RFIN, R21, R23, R19, R20 H2511-01001-1/10W1 RSEN3 H2511-01003-1/10W1 RPG1, RPG2, RPG3 H2511-01052-1/10W1-T ...

Page 10

... ISL9444EVAL1Z PCB Layout FIGURE 17. TOP LAYER FIGURE 19. THIRD LAYER FIGURE 18. SECOND LAYER (SOLID GROUND) FIGURE 20. BOTTOM LAYER ...

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